求高手帮看一个问题.NET问题

Question

 1                     alist = new List<ChartMetaData>();
 2                     blist = new List<ChartMetaData>();
 3                     clist = new List<ChartMetaData>();
 4                     dlist = new List<ChartMetaData>();
 5 
 6                     for (DateTime bDateTime = beginDatetime; bDateTime < endDatetime; bDateTime = bDateTime.AddMinutes(Convert.ToDouble(timeInterval)))
 7                     {
 8                         tempData = new ChartMetaData();
 9                         tempData.GetDate = bDateTime;
10                         if (Aitem=="1")
11                             alist.Add(tempData);
12                         if (Bitem == "1")
13                             blist.Add(tempData);
14                         listCount++;
15                     }
16                     
17 
18                     onlinePowerList = createPower.GetList(seeid, beginDatetime, endDatetime);
19                     if (onlinePowerList.Count > 0)
20                     {
21                         double[] pe = createWarnSet.GetBestValue(seeid, WarningType.P);
22                         double[] zpe = createWarnSet.GetBestValue(seeid, WarningType.ZP);
23 
24                         ct = createSee.GetCt(seeid);
25                         pt = createSee.GetPt(seeid);
26                         foreach (OnlinePower model in onlinePowerList)
27                         {
28                             for (int i = 0; i < listCount; i++)
29                             {
30                                 if (Aitem == "1" && alist[i].GetDate==model.GetTime)
31                                 {
32                                     alist[i].Value = model.PA * ct * pt;
33                                     alist[i].StrValue = alist[i].Value.ToString();
34                                     alist[i].MaxValue = pe[1];
35                                     alist[i].MinValue = pe[2];
36                                  }
37 
38                                 if (Bitem == "1" && blist[i].GetDate == model.GetTime)
39                                 {
40                                     blist[i].Value = model.PB * ct * pt;
41                                     blist[i].StrValue = blist[i].Value.ToString();
42                                     blist[i].MaxValue = pe[1];
43                                     blist[i].MinValue = pe[2];
44                                }
45 
46                              }
47                         }
48                     }

 

调试时 当调试到alist[i].Value被赋值为155时，监视一下下面的blist[i].Value值也会等于155 调试到下面给 blist[i].Value赋值为140时，监视一下上面的alist[i].Value的值也跟着变成了140，这个是什么情况，求高手帮忙

Answer 1

在for循环时，每次都new 个对象出来，问题即可解决。 产生原因：你在for循环操作中都是操作同一个内存副本。